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Table 4 Pigmentation scores and 25(OH)D levels

From: Skin pigmentation, sun exposure and vitamin D levels in children of the Avon Longitudinal Study of Parents and Children

Pigmentation scores 25(OH)D (nmol/l)a 95% CI p-value R2b
Skin colour score 0.6 0.2, 1.0 0.003 0.0015
Tanning score 0.3 0.1, 0.6 0.003 0.0014
Freckling score 0.4 0.1, 0.7 0.01 0.0012
  1. aMean difference in 25(OH)D levels per unit increase in pigmentation score, adjusted for sex, age at blood draw and principal components.
  2. bSemipartial correlation coefficient squared, indicates the unique contribution of the genetic score to trait variability.
  3. N = 5649.